Anybody who watches others is an observer of behaviour.
Overt: Can be outwardly seen/ sensed by an observer.Covert: Cannot be outwardly seen/ sensed by an observer.
Observer is a noun.
The German translation of observer is Beobachter.
Argus Observer was created in 1897.
Manchester Observer ended in 1828.
Manchester Observer was created in 1818.
The Observer EP was created in 2003.
Leitrim Observer was created in 1904.
The Vancouver Observer was created in 2006.
The Charlotte Observer was created in 1886.
Sarnia Observer was created in 1853.
Basingstoke Observer was created in 2000.